Table 2.
Characteristics of the four groups
| TD-controls (N = 42) | Dyslexia-only (N = 17) | AS-only (N = 17) | Dyslexia+AS (N = 25) | F | p | ηp2 | |||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Age | 10.27a | (2.63) | 10.69a | (1.77) | 9.54a | (2.60) | 10.33a | (1.42) | .79 | .50 | .02 |
| Vocabulary (VIQ) 1,2 | 48.55a | (8.41) | 46.53a | (3.86) | 47.82ab | (7.87) | 41.24b | (8.02) | 5.09 | .00 | .14 |
| Matrices (NVIQ) 1,2 | 52.95a | (5.97) | 51.41a | (7.52) | 51.82a | (6.17) | 51.72a | (5.53) | .37 | .77 | .01 |
| Word reading 1,3 | 108.81a | (12.37) | 75.47c | (6.44) | 101.53a | (12.41) | 81.92b | (8.22) | 57.15 | .00 | .64 |
| Spelling 1,3 | 110.12a | (11.81) | 79.18c | (8.99) | 100.76b | (10.24) | 75.28c | (6.48) | 80.49 | .00 | .71 |
| (N = 10)y | (N = 15)y | (N = 14)y | (N = 23)y | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Parent rated inattention (9) | 2.00a | (1.70) | 3.07a | (1.71) | 7.36b | (1.39) | 6.70b | (1.79) | 34.07 | .00 | .64 |
| Parent rated hyperactivity/impulsivity (9) | 1.10a | (1.20) | 1.33a | (1.54) | 5.14b | (3.37) | 4.57b | (3.45) | 8.09 | .00 | .30 |
| (N = 38)z | (N = 16)z | (N = 17)z | (N = 20)z | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Teacher rated inattention (9) | .82a | (1.27) | 2.38b | (1.67) | 4.71c | (2.80) | 6.00c | (2.51) | 34.84 | .00 | .55 |
| Teacher rated hyperactivity/impulsivity (9) | .42a | (.79) | .81a | (1.05) | 4.18b | (2.65) | 3.15b | (2.60) | 22.76 | .00 | .44 |
Note: 1 = subtests from BAS-II, 2 = t-scores, 3 = standard scores, y = subsample with parent ratings of AS, z = subsample with teacher ratings of AS. Means with common subscripts are not significantly different after Games–Howell correction for multiple comparisons (p < .05).